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Which of the following has maximum ionis...

Which of the following has maximum ionisation energy ?

A

`BatoBa^(+)+e^(-)`

B

`BetoBe^(+)+e^(-)`

C

`CatoCa^(2+)+2e^(-)`

D

`Mg to Mg^(-)+e^(-)`

Text Solution

Verified by Experts

The correct Answer is:
B
Down the group size increases and therefore, attraction between valence shell electron and nucleus decreases and thus ionisation energies decrease.
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